Technical data

9.0 Commissioning the Boiler
23
9.1 Commissioning the Boiler
1. Reference should be made to BS 5449 when
commissioning the boiler.
2. Open the mains water supply to the boiler.
3. Open all hot water taps to purge the DHW
system.
4. Ensure that the filling loop is connected and
open, then open the heating flow and return
valves on the boiler.
5. Open the screw on the automatic air vent
(Fig. 32).
6. The system must be flushed in accordance
with BS 7593 (see Section 6.2) and the flushing
agent manufacturers instructions.
7. Pressurise the system to approximately 0.5 bar
(Fig. 33). Close and disconnect the filling loop.
8. Turn the gas supply on and purge the system
according to BS 6891.
9. Test for gas soundness.
10. If at any time during commissioning it is
required to terminate a particular cycle, e.g. the
pump overrun period, turn the selector to the OFF
position and then back to either ( ) or ( )
(Fig. 34).
Automatic
Air Vent
Pressure
Gauge
Screw
2
1
0
4
3
bar
Fig. 32
Selector Switch
Central Heating
Temperature Control
Hot Water
Temperature Control
Fig. 33
30° 40° 50° 60° 70° 80°
2
1
0
4
3
bar
Pump
Fig. 34
Power On
Neon